package hot100;

import java.util.ArrayList;
import java.util.List;

/**
 * 22. 括号生成
 */
public class generateParenthesis {

    List<String> res = new ArrayList<>();

    public List<String> generateParenthesis(int n) {
        return null;
    }

    public void backtrack(int n, char[] arr, StringBuffer stringBuffer) {

    }
}
